/ Dictionary / Index D didy: Meaning and Definition of Find definitions for: di•dy Pronunciation: (dī'dē), [key] — pl. -dies. diaper (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. didst didymium Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language